Config file location adheres to XDG base directory specification

http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
Added setup.py and AUTHORS
Merge pull request #17 from quigybo/xdg_config

Config file location should adhere to XDG base directory specification
Don't completely pin the requests version
Added pytest configuration
Fixed pytest.ini and a PEP8 violation
Added dummy test
Added travis.yml
Added travis badge to readme
Ignore asyncproc in coverage report